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Finding the Fourth Proportional to 305,304.20, 421,302.59 and 169,328.39

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Solution

The fourth proportional to 305,304.20, 421,302.59 and 169,328.39 is: 233,663.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    305,304.20 : 421,302.59 = 169,328.39 : x
  2. Step 2: Convert to fraction form
    305,304.20/421,302.59 = 169,328.39/x
  3. Step 3: Cross multiply
    305,304.20x = 421,302.59 × 169,328.39
  4. Step 4: Simplify right side
    305,304.20x = 71,338,486,314.38
  5. Step 5: Solve for x
    x = 71,338,486,314.38/305,304.20
  6. Step 6: Final answer
    x = 233,663.63

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.